Ball-bearing with several rows of balls.



OSKAR HOFFMANN, OF WILLICH, NEAR CREFELD, GERMNY.

BALL-BEARING WITH SEVERAL ROWS OF BALLS.

To all whom it may concern Be it known that I, Osuna HOFFMANN, a subject of the Emperor of Germany, and residing at Willich, near Crefeld, Germany, have invented certain new and useful Improvements in Ball-Bearings with Several Rows of Balls, of which the followingT is a specification.

My invention has reference to a ball-bearing having several rows of balls with openings in the rings for filling in the said balls.

An essential feature of the invention is that the fllingopenings of the various rows of balls are displaced relatively to one another in each of the two rings with regard to the periphery of the ring. This can be attained either by having the center lines of the filling-openings of each ring die` posed in a radial direction` but not eoinl:iding with one another, or else by having `the center lilies indeed coinciding with one another, but disposed obliquely instead of radially. The filling-openings are situated on the inner ring or on the outer ring or on both rings together and they are so arranged as to run from the outer edge of the rings toward the first row of halls as also between the individual rows of balls.

The balls are filled in from that side of the bearing on which the outer edge of the rings is provided with the necessary openings. The rings are brought into the most favorable position with regard to one another for filling purposes and the introduction o't' the balls in the first ball-race is carried out in a lmownmanner. lhe balls are run into thel farther ball--i'aees from the first ball-rave in a similar manner after the filling-openings between the ball-races in question have also been brought into the most favorable position for passing the balls through.

The drawings show the subject of my invention, as follows:-

Figure l represents a plan-view oi a ballbearing, and Figs, Q, 3 and 4 are seetions on the lines A-A, lli-l and Cw() of liig. 1. Fig. 5 is a development of the periphery ot one of the rings and from it can be seen how the displacement of the filling-open ings with regard to one :nother ean be at- Specification of Letters Yatent.

Application led May 16, 1914. SerlaI No. 838,939.

Patented July 28, 11H4.

tained by the oblique arrangement of their common eenter-line.

n is the outer ring, z' the inner ring.

Z1, Z2, 3 and l* are the ball-races. In the example shown in the drawings only two rows of balls are provided.

Fig. 2 shows the llling-openings el, ci' in the outer and inner rings.

Fig. 3 shows the inner filling-opening e in the outer ring, and Fig. 4 shows the inner filling-opening e4 in the inner ring.

From Figs. 2, 3 and 4 can be seen that the filling-openings e, e which are arranged radially do not lie in a straight line with the openings en, e4, but that they are displaced with regard to each other.

It a ball is lying in front of two oppositely disposed inner filling-openings, then it is nevertheless impossible 'for the ball to he thrust out, because the ball in the next row is held back l'v the high edge otl the ring on the other side. The lateral distance between the rows of balls can be so diniensioned that a, lateral pressure on a ball is immediately transmitted to the neighboring ball of the next row. The balls of the individual rows are held in a li'nown manner by means of holding rings or enges.

Having now described my invention what I rlaini as new and desire to secure by Letters latent is l, A ball bearing comprising inner and outer rings having a plurality of' ball rueeways and provided with lateral slots which when in register -torni filling openings Vt'oi inserting the balls from one side ofthe rings into the first rureway, said rings also having .slots connecting said rareway to the adjacent rareway, the latter slots being eirrumferentially displaeed when the first uientioned slots are in register but permitting, when brought into register, the balls to be passed from the lirst rareway into the adjacent raeeway.

3. A ball bearing eoiulrirising inner and outer rings having a plurality of ball raee- 'ays and provided with lateral slots which when in register torni filling openings for inserting the halls i'roni one side of rings into the first ra e\\'ay, said rings also having slots connecting said rareway to the ion.

HELEN NUFER, FRANCES NUFER.

MM M 

